05/23/12 Georgia Amendments- Prescriptive Deck Details Sheet 7 of 22
JOIST-TO-BEAM CONNECTION
Each joist shall be attached to the beam as shown in FIGURE 8. Use Option 1 or Option 2 when joists
bear on or overhang past the beam as shown in FIGURE 2 and FIGURE 4. Use Option 3 when joists attach
to the side of the beam as shown in FIGURE 3; however, the joist depth must be less than or equal in
depth to the beam depth. See
Joist Hangers below for information on hanger requirements. Mechanical
fasteners or hurricane clips used in Option 2 shall have a minimum capacity of 100 lbs. in both uplift and
lateral load directions. See manufacturer's instructions for minimum installation requirements.
beam
(3) 8d toe nailed
(2 on one side,
1 on the other)
mechanical
fastener or
hurricane clip
OPTION 1*
joist
hanger
top of beam and joist
must be at same
elevation
OPTION 2
OPTION 3
*Option 1 is prohibited on free-standing decks
FIGURE 8: JOIST-TO-BEAM DETAIL
JOIST HANGERS
Joist hangers, as shown in FIGURE 9, shall have a minimum
capacity of 600 lbs. for 2x8s, 700 lbs. for 2x10s and 800 lbs.
for 2x12s. The joist hanger shall be designed and
manufactured for the number of plies it is carrying.
Use joist hangers with inside flanges when clearances to the
edge of the beam or ledger board dictate.
Do not use clip angles or brackets to support framing
members. Do not bend hanger flanges to accommodate
field conditions.
joist hanger with inside flanges
FIGURE 9: TYPICAL JOIST HANGERS
POSTS
Deck posts shall be 6x6 with a maximum height of 14'-0" measured
from the top of the footing to the underside of the beam. The beam
shall be attached to the post by one of the methods shown in FIGURE
11. The attachment condition shown in FIGURE 10 is prohibited.
The post cap shown in FIGURE 11, Option 2 shall be specifically
designed for two- or three-ply beams and 6x6 posts with a minimum
downward allowable load capacity of 5,000 lbs. Attachment shall be
per manufacturer's instructions. Post caps shall be galvanized per the
requirements noted on Sheet 3. 4x4 & 4x6 posts can be used if
tributary loading values are calculated by a design professional.
Cut ends of posts shall be field treated with a wood
preservative containing copper naphthenate in accordance
with AWPA M4. Such products can be found in the paint
department of most hardware or home center stores.
FIGURE 10: PROHIBITED
POST-TO-BEAM ATTACHMENT
To Next Page
Loading...